EDIT: May 10th, 2005
These are more recent shots of the tank:
ORIGINAL THREAD STARTS HERE:
This is my River Tank. I set it up about a year ago exclusively for Hillstream loaches I got in Hong Kong, but have added a few SAE out of necessity, a dozen Amano shrimp, a school of glass catfish, a school of White Cloud Mt Minnows, a couple zipper loaches, 2 golden killifish, a Chinese Algae Eater, and a redtail black "shark". The tank sits at one end of a sofa, so you can view both of the long sides, one side from the sofa, the other from the dining room. It's now densely run over with mondo grass, micro-swords, anacharis, tiger lotus, moss balls, apogneton, amazon swords, rotala, and some plant that sends up broad red leaves and has propagated through plantlets on a stalk.
I've got a powerhead pulling water through an undergravel pvc pipe and a pond filter to create unidirectional flow that simulates a river environment. Hillstream loaches just love it. I have 3 DIY CO2 jugs, 2 feeding into the powerhead and 1 into an AquaClear Mini, creating a constant swarm of CO2 bubbles. It keeps the pH between 6.6 and 7.0. Filtration turnover rate is once every 3 minutes, so the water is crystal clear. I've got 2 overloaded flourescents on top and 1 standard for a total of about 80 watts on a 20-gallon long. Plant growth keeps nitrates below 10ppm with no water changes needed, just top off for evaporation couple times a week. I add ferrous sulfate daily, and a little potassium weekly.
Check out the lush aquatic river garden at: